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NixOS RISC-V

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NixOS on RISC-V https://wiki.nixos.org/wiki/RISC-V https://pad.lassul.us/NixOS-riscv64-linux https://github.com/orgs/NixOS/teams/risc-v69 Servers

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18 Jun 2024
@cnx:loang.net@cnx:loang.netdevelopers have been spoiled with really powerful amd64 compooters, laptops from almost a decade ago are still really usable today and they're much more powerful than the mid-level risc-v soc we've seen so far17:37:17
@thefossguy:matrix.orgPratham Patel (you can mention me)
In reply to @cnx:loang.net
the jh7110 is very well mainlined, but true it's quite weak for a laptop
not that it's weak for a laptop but that it's "profile" (if you can even call it that) is RV64GC which is very basic
17:44:01
@thefossguy:matrix.orgPratham Patel (you can mention me)while the "real" profiles which will be on servers (yes they're coming soon) will be using RVA2317:44:30
@rosscomputerguy:matrix.orgTristan RossWhat's the difference between RVA23 and RV64GC?17:46:35
@thefossguy:matrix.orgPratham Patel (you can mention me) Which has all the fancy extensions and more importantly, platform features like Sv57 17:47:06
@thefossguy:matrix.orgPratham Patel (you can mention me)
In reply to @rosscomputerguy:matrix.org
What's the difference between RVA23 and RV64GC?
https://github.com/riscv/riscv-profiles/blob/main/src/rva23-profile.adoc
17:47:12
* @thefossguy:matrix.orgPratham Patel (you can mention me) logs off for the night (IST)17:47:40
@rosscomputerguy:matrix.orgTristan Ross
In reply to @thefossguy:matrix.org
https://github.com/riscv/riscv-profiles/blob/main/src/rva23-profile.adoc
Oh nice
17:47:54
@rosscomputerguy:matrix.orgTristan RossFloating points and vectors will be great to have 17:48:23
@rosscomputerguy:matrix.orgTristan RossHopefully chips go with a good implementation of things in the silicon 17:48:56
@thefossguy:matrix.orgPratham Patel (you can mention me)before I log off; think of RV64GC as Arm-v8 and RVA23 as SBBR or whatever they call their Server Platform base thingy17:49:18
@thefossguy:matrix.orgPratham Patel (you can mention me)
In reply to @rosscomputerguy:matrix.org
Floating points and vectors will be great to have
g already contains imafd ;)
17:49:46
@rosscomputerguy:matrix.orgTristan Ross
In reply to @thefossguy:matrix.org
before I log off; think of RV64GC as Arm-v8 and RVA23 as SBBR or whatever they call their Server Platform base thingy
Ooh, hopefully this brings RISC-V chips a bit closer to being more performant
17:51:22
@rosscomputerguy:matrix.orgTristan Ross
In reply to @thefossguy:matrix.org
g already contains imafd ;)
Didn't realize that
17:51:31
@thefossguy:matrix.orgPratham Patel (you can mention me)ranted here in more detail https://matrix.to/#/!GhnNOKFLyvWBmnjqRS:fedoraproject.org/$9FGD8-67N7zQIhfMbWZKBqCa3qT9zq6l25iGim11ifY?via=fedoraproject.org&via=matrix.org&via=fedora.im17:53:20
@alex:tunstall.xyzAlex
In reply to @rosscomputerguy:matrix.org
Didn't realize that
More precisely, G is shorthand for IMAFD_Zicsr_Zifencei.
18:21:37
@rosscomputerguy:matrix.orgTristan RossOh, I know zicsr and zifencei18:35:38
22 Jun 2024
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24 Jun 2024
@joerg:thalheim.ioMic92We are just one pull request away from having our first image for nixos-anywhere: https://github.com/NixOS/nixpkgs/pull/32199113:27:36
@joerg:thalheim.ioMic92However I currently don't have hardware that I can kexec on, so I would appreciate if someone could run a test of it.13:28:08
@joerg:thalheim.ioMic92Image itself will be here: https://github.com/nix-community/nixos-images/pull/24313:28:19
@thefossguy:matrix.orgPratham Patel (you can mention me)Oh wow, didn't know we came this far!13:29:14
@joerg:thalheim.ioMic92nix-community.cachix.org will than also cache some core-components for cross compiling NixOS from x86 to riscv64.13:29:20
@thefossguy:matrix.orgPratham Patel (you can mention me)*we've come13:29:20
@0x4a6f:matrix.org[0x4A6F]Currently not near my devices. But it is build and I will check soonish.14:04:18
@hive:the-apothecary.clubDr. Worm changed their profile picture.23:17:28
25 Jun 2024
@rosscomputerguy:matrix.orgTristan Ross
In reply to @joerg:thalheim.io
nix-community.cachix.org will than also cache some core-components for cross compiling NixOS from x86 to riscv64.
What about cross compiling from aarch64 to riscv64?
04:20:53
@cnx:loang.net@cnx:loang.netwhy x86 and aarch64 when amd64 chips with good single thread perf are much more common?09:34:12
@alex:tunstall.xyzAlex
In reply to @cnx:loang.net
why x86 and aarch64 when amd64 chips with good single thread perf are much more common?
I'm pretty sure amd64 is what Mic was referring to when they said "x86".
10:48:28

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